Browsing by Author "Wu, Yen-Chieh"

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HUMAN ACTION RECOGNITION BASED ON LAYERED-HMM
(2008)
Wu, Yen-Chieh
;
Chen, Hsuan-Sheng
;
Tsai, Wen-Jiin
;
Lee, Suh-Yin
;
Yu, Jen-Yu
We address the problem of human action understanding of the upper human body from video sequences. Time-sequential images expressing human actions are transformed to sequences of feature vectors containing the configuration of the human body. A human is modeled as a collection of body parts, linked in a kinematic structure. The relation of the joints is used to estimate the human pose. A proposed layered HMM framework decomposes the human action recognition problem into two layers. The first layer models the actions of two arms individually from low-level features. The second layer models the interrelationship of two arm as an action. Experiments with a set of six types of human actions demonstrate the effectiveness of our proposed scheme, and the comparisons with other HMM systems show the robustness.